US6156097A - CO2 removable from fluorocarbons by semipermeable membrane - Google Patents
CO2 removable from fluorocarbons by semipermeable membrane Download PDFInfo
- Publication number
- US6156097A US6156097A US09/070,904 US7090498A US6156097A US 6156097 A US6156097 A US 6156097A US 7090498 A US7090498 A US 7090498A US 6156097 A US6156097 A US 6156097A
- Authority
- US
- United States
- Prior art keywords
- carbon dioxide
- fluorocarbon
- membrane
- weight
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000012528 membrane Substances 0.000 title claims abstract description 76
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 192
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 145
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 145
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000000203 mixture Substances 0.000 claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 46
- 229920001721 polyimide Polymers 0.000 claims abstract description 31
- 239000004642 Polyimide Substances 0.000 claims abstract description 28
- 230000002829 reductive effect Effects 0.000 claims abstract description 10
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 claims description 52
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 37
- PGFXOWRDDHCDTE-UHFFFAOYSA-N hexafluoropropylene oxide Chemical compound FC(F)(F)C1(F)OC1(F)F PGFXOWRDDHCDTE-UHFFFAOYSA-N 0.000 claims description 27
- 229920003235 aromatic polyamide Polymers 0.000 claims description 11
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 claims description 11
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 239000000460 chlorine Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 6
- VNAFWALXWOAPCK-UHFFFAOYSA-N 1-phenyl-2,3-dihydro-1h-indene Chemical group C1CC2=CC=CC=C2C1C1=CC=CC=C1 VNAFWALXWOAPCK-UHFFFAOYSA-N 0.000 claims description 4
- -1 alkyl vinyl ethers Chemical class 0.000 claims description 4
- WMIYKQLTONQJES-UHFFFAOYSA-N hexafluoroethane Chemical compound FC(F)(F)C(F)(F)F WMIYKQLTONQJES-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 239000012466 permeate Substances 0.000 description 53
- 239000007789 gas Substances 0.000 description 26
- 238000000926 separation method Methods 0.000 description 19
- 239000012535 impurity Substances 0.000 description 13
- 239000003513 alkali Substances 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 6
- 238000006116 polymerization reaction Methods 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 238000004458 analytical method Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000012510 hollow fiber Substances 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005201 scrubbing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229920004738 ULTEM® Polymers 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000009719 polyimide resin Substances 0.000 description 3
- 239000012264 purified product Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- KHXKESCWFMPTFT-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-(1,2,2-trifluoroethenoxy)propane Chemical compound FC(F)=C(F)OC(F)(F)C(F)(F)C(F)(F)F KHXKESCWFMPTFT-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000005371 permeation separation Methods 0.000 description 2
- 229920001601 polyetherimide Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XWCDCDSDNJVCLO-UHFFFAOYSA-N Chlorofluoromethane Chemical class FCCl XWCDCDSDNJVCLO-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- OWYWGLHRNBIFJP-UHFFFAOYSA-N Ipazine Chemical compound CCN(CC)C1=NC(Cl)=NC(NC(C)C)=N1 OWYWGLHRNBIFJP-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 125000003118 aryl group Chemical class 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- NEHMKBQYUWJMIP-OUBTZVSYSA-N chloromethane Chemical class Cl[13CH3] NEHMKBQYUWJMIP-OUBTZVSYSA-N 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 238000010960 commercial process Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000011005 laboratory method Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/48—Compounds containing oxirane rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms, e.g. ester or nitrile radicals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
Abstract
Description
2 NaOH+CO.sub.2 →Na.sub.2 CO.sub.3 +H.sub.2 O
Ca(OH).sub.2 +CO.sub.2 →CaCO.sub.3 +H.sub.2 O
TABLE 1 ______________________________________ Flowrates (Liter/min.) Feed Time Non- Pressure CO.sub.2 Concentr. (ppm by vol.) Hrs. Feed Perm. Perm. kpa Feed Permeate Product ______________________________________ 0.50 1.066 0.292 0.763 930 17,517 63,941 16.4 1.50 1.066 0.268 0.736 930 16,338 64,964 21.3 2.25 1.244 0.259 0.899 930 14,249 68,265 59.2 3.25 1.244 0.246 0.954 930 11,431 57,524 79.6 5.75 1.096 0.208 0.872 930 7,000 36,749 35.0 7.00 0.859 0.213 0.681 930 4,322 17,378 16.4 10.25 1.155 0.155 0.954 840 2,218 16,351 30.6 11.50 1.096 0.143 0.899 805 1,530 11,521 33.5 12.25 0.770 0.130 0.627 710 1,049 6,171 9.1 14.25 0.710 0.115 0.627 680 714 4,401 2.3 14.75 0.710 0.111 0.627 620 589 3,681 16.2 17.50 0.651 0.091 0.627 600 483 3,388 10.3 18.25 0.651 0.081 0.627 565 261 2,082 2.3 19.00 0.533 0.080 0.517 570 126 830 1.4 21.00 0.533 0.068 0.517 495 105 816 1.0 ______________________________________
TABLE 2 ______________________________________ Separation of TFE and CO.sub.2 with Polyimide Membrane .increment.p TFE in Reject Stream TFE in Permeate Stream (psi) (kPa) Rate (g/min) Purity (wt %) Rate (g/min) Loss (%) ______________________________________ 59.0 407 8.604 60.0 0.0520 0.60 25.0 172 5.233 71.4 0.0786 1.48 12.8 88 3.912 82.7 0.0967 2.41 5.6 39 1.977 91.2 0.1046 5.02 2.7 19 0.960 95.8 0.1225 11.3 1.1 8 0.334 98.5 0.1204 26.5 ______________________________________
TABLE 3 ______________________________________ TFE/CO.sub.2 Separation at 60 psig with Polyaramid Membrane .increment.p TFE in Reject Stream TFE in Permeate Stream (psi) (kPa) Rate (g/min) Purity (wt %) Rate (g/min) Loss (%) ______________________________________ 4.8 33 0.3409 56.0 0.00068 0.20 2.8 19 0.2140 60.7 0.00071 0.33 1.8 12 0.1440 66.0 0.00069 0.48 1.0 7 0.0937 78.9 0.00079 0.83 0.5 3 0.0559 85.5 0.00073 1.29 ______________________________________
TABLE 4 ______________________________________ TFE/CO.sub.2 Separation at 100 psig with Polyaramid Membrane .increment.p TFE in Reject Stream TFE in Permeate Stream (psi) (kPa) Rate (g/min) Purity (wt %) Rate (g/min) Loss (%) ______________________________________ 4.9 34 0.5435 58.1 0.00110 0.20 3.7 23 0.4318 60.5 0.00112 0.26 2.7 19 0.3358 63.6 0.00120 0.36 1.8 12 0.2532 69.7 0.00123 0.48 0.8 6 0.1398 82.1 0.00137 0.97 0.5 3 0.0972 90.2 0.00149 1.51 ______________________________________
TABLE 5 ______________________________________ TFE/CO.sub.2 Separation at 145 psig with Polyaramid Membrane .increment.p TFE in Reject Stream TFE in Permeate Stream (psi) (kPa) Rate (g/min) Purity (wt %) Rate (g/min) Loss (%) ______________________________________ 5.1 35 0.8438 59.9 0.00192 0.23 4.2 29 0.7101 62.2 0.00196 0.27 3.2 22 0.5777 65.7 0.00196 0.34 2.0 14 0.4086 72.9 0.00210 0.51 1.0 7 0.2393 84.0 0.00233 0.96 0.5 3 0.1509 89.8 0.00227 1.49 ______________________________________
TABLE 6 ______________________________________ Data for Stage 1 of Example 6 p.sub.1 .increment.p.sub.1 TFE in Reject Stream TFE in Permeate Stream (MPa) (kPa) Rate (g/min) Purity (wt %) Rate (g/min) Loss (%) ______________________________________ 0.52 27.6 1.078 87.2 0.0333 2.99 0.52 55.2 2.073 75.1 0.0350 1.66 0.79 27.6 2.121 88.9 0.0678 3.10 0.79 55.2 3.563 78.0 0.0544 1.50 1.07 27.6 2.082 94.7 0.1256 5.69 1.07 55.2 4.778 82.4 0.1043 2.14 ______________________________________
TABLE 7 ______________________________________ Data for Stage 2 of Example 6 P.sub.2 .increment.P.sub.2 Stream TFE in Reject Stream TFE in Permeate Stream (MPa) (kPa) Reject Permeate Rate (g/min) Loss (%) ______________________________________ 0.49 13.8 89.3 22.5 0.0072 0.67 0.46 27.6 81.4 4.2 0.0063 0.30 0.77 13.8 92.6 18.0 0.0152 0.71 0.74 27.6 85.3 3.7 0.0127 0.36 1.04 13.8 95.9 45.2 0.0248 1.19 1.01 27.6 90.1 5.7 0.0248 0.53 ______________________________________
TABLE 8 ______________________________________ Polyimide Membrane at Low CO.sub.2 Concentration (Example 7) CO.sub.2 Conc. (wt %) TFE Rate (g/min) CO.sub.2 Rate (g/min) Removed Feed Reject Feed Reject Feed Reject CO.sub.2 (%) ______________________________________ 2.96 1.03 1.589 1.582 0.0485 0.0165 66.0 1.14 0.58 1.172 1.148 0.0135 0.0067 50.4 ______________________________________
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/070,904 US6156097A (en) | 1997-05-02 | 1998-05-01 | CO2 removable from fluorocarbons by semipermeable membrane |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4401397P | 1997-05-02 | 1997-05-02 | |
US09/070,904 US6156097A (en) | 1997-05-02 | 1998-05-01 | CO2 removable from fluorocarbons by semipermeable membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
US6156097A true US6156097A (en) | 2000-12-05 |
Family
ID=21930066
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/070,904 Expired - Lifetime US6156097A (en) | 1997-05-02 | 1998-05-01 | CO2 removable from fluorocarbons by semipermeable membrane |
Country Status (6)
Country | Link |
---|---|
US (1) | US6156097A (en) |
EP (1) | EP0980346B1 (en) |
JP (2) | JP2001526655A (en) |
CN (1) | CN1150144C (en) |
DE (1) | DE69823182T2 (en) |
WO (1) | WO1998050331A1 (en) |
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US7011694B1 (en) * | 2001-05-14 | 2006-03-14 | University Of Kentucky Research Foundation | CO2-selective membranes containing amino groups |
US20090234457A1 (en) * | 2001-06-29 | 2009-09-17 | The Regents Of The University Of California | Systems, devices and methods for treatment of intervertebral disorders |
WO2015006258A1 (en) | 2013-07-12 | 2015-01-15 | Arkema Inc. | Method of separating organofluorine compounds using membrane |
US9725384B2 (en) | 2013-07-12 | 2017-08-08 | Arkema Inc. | Method for separating organofluorine compounds using membrane |
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US10384992B2 (en) | 2015-04-09 | 2019-08-20 | AGC Inc. | Manufacturing method of hydrofluoroolefin |
Also Published As
Publication number | Publication date |
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CN1254329A (en) | 2000-05-24 |
CN1150144C (en) | 2004-05-19 |
EP0980346A1 (en) | 2000-02-23 |
EP0980346B1 (en) | 2004-04-14 |
WO1998050331A1 (en) | 1998-11-12 |
JP2008115191A (en) | 2008-05-22 |
DE69823182D1 (en) | 2004-05-19 |
JP2001526655A (en) | 2001-12-18 |
DE69823182T2 (en) | 2005-04-21 |
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